ok my engines ben done for awhile and i've ben talking about it off and on and now i finally have my eclipse with me and the 420a engine why i built the 420a insted of a 4g63 i dont know why guess im stupid so dont ask about that but the engine is fully built except for the crank winsco stock size pistons eagle rods new rod bearing main bearings water pump oil pump and all new gaskets and a cosmetic head gasket arp head studs new vavles crower springs and retainers stage 3 crower cam shafts and a stage three port and polish on the head now my biggest wonder because i keep hearing diffrent words about it is that since its got stage three cams does it HAVE to be turbo charged or can i run it for like a month with out a turbo on it the engines goin in this week so i want to try and get it running by this weekend so if anyone has stage three cams in there car or knows someone running stage three cams is it safe without a turbo even though the cams are sucking so much air?

 

what cams exactly do you have? cams are not sucking in anything all they are doing is opening exhaust and intake valves ( I figure you know that already thoguh)

 

Stage 3 - 3/4 Race


Recommended for strip and some street.


Lope at idle.


Requires #84175


RPM Range: 1100 to 8250+
280 / 280
196 Lobe 198

213 Valve 215
.411" inch .391"

10.44 mm 9.93those were the ones i bought for it and i alreddy started to get the engine in probably gonna finish it off tomorrow but befor i even start it i wanna make sure could drive with out ****ing the engine up and i need a good answer from somebody that knows all about cams and turbos and **** because people around my place no nothing about whats goin on with it so i need a word i can trust

 

wow! 280's... i ddin't know they made those for the 420a. as a matter of fact the only company i knew made them for street cars was GSC's cams for the EVO. i'd definatly suggest throwing your turbo on there asap, only b/c you aren't gettting any gain from them right now. but once you throw a turbo on there, hold on! what compression pistons did you get?

 

hks makes the 280's to i think and the evo engines are close to bein the same as the 420a like i know you can swap the evo head on to the 420a or atleast i heard but the pistons are 8.8:1

 

you cant swap an evo head onto a 420a

 

i didnt really think you could but it was just what i heard what about swapping the entire evo engine into the 420a body ever heard of that?

 

no, can't be done, not w/o spending about 6k fo the conversion not including price of the engine.

 

Hey it been over a week since he asked and i answered already.So quit the post whoring